Can't find anything that beats Metallica 's St Anger.
Incredible shitty sound, and when you realize they did this on purpose, with enough money to make anything they want, ending up with this is just a shame.

As far as a bigger metal release, the drums on Krisiun "Ageless Vemonless" made that album unlistenable. And I like Krisiun.

The drum sound on Ageless Venomous is terrible, it took me a while to finally get used to it._________________Well black metal doesn't really go in that group... at all.... Black metal is all witches and warlocks and graveyards....

Shub Niggurath 'Evilness...' was a good call. Complete fucking shit. It's like someone heard Blessed Are The Sick and decided that with enough effort one can indeed come up with an even wimpier, fake drum sound.

Mortuary Drape 'Secret Sudaria' has an absolutely horrid drum sound, especially for the style. It makes it next to unlistenable to me and kills the atmosphere.

for me there doesn´t exist THE worst drum sound, especially in acoustic instruments. It´s all about the context.

I think so too, tried to think about the absolute worst sound but I can't come up with it. Also I have no hate for triggers in themselves, only I don't like the way the drums are usually made to sound in modern productions.